15x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom They reliably warm the root

They reliably warm the root zone to 10ºF-20ºF above ambient air temperature

Pads are replaceable

This commercial air pump with 8 outlets is perfect to run several Waterfarms or multiple air stones at once

as well as mealybugs and insect eggs

15x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom They reliably warm the rootNordic Pure Custom MERV 12 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition